Carol Zlatich, nursing student at Chamberlain College of Nursing and volunteer at Medical Aid Station 7, right, passes out Tylenol, while Lt. Cmdr. Stephanie Smith, a family medical physician at the Washington Navy Yard Branch Health Clinic, which falls under Naval Health Clinic Quantico, marks the number tags of runners who receive pain relievers. - Carol Zlatich, nursing student at Chamberlain College of Nursing and volunteer at Medical Aid Station 7, right, passes out Tylenol, while Lt. Cmdr. Stephanie Smith, a family medical physician at the Washington Navy Yard Branch Health Clinic, which falls under Naval Health Clinic Quantico, marks the number tags of runners who receive pain relievers.